MD3000 Performance

[Andrey Dmitriev]

All,

We have an MD3000 with 8x15K SAS drives. I could not push this thing 
beyond 100 megs per second, in any RAID configuration (including RAID0). 
Which was kind of sad to me, b/c the 2950 it's attached to can do 
150-200 with raid5.

Anyone has a clue? Dell support so far has been pretty helpless, and 
they've been 'working on it' for about a month. They were not able to 
tell me how they achieved 1400Megs/sec.

I don't think it's a bad array, but it obviously doesn't seem to scale 
well with new spindles, as speeds were about the same with half disks or 
all disks in a RAID, which seems to indicate to be either a controller 
or a SAS card bottleneck.

-andrey